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The Generac 3100 psi (gas - cold water) pressure washer is available for purchase today.

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Generac 3100 PSI (Gas - Cold Water) Pressure Washer

(Based on expert analysis, manufacturer ratings and customer reviews)

4.7 out of 54.7 out of 54.7 out of 54.7 out of 54.7 out of 5
108 Reviews
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  • Features
  • Specs
  • 9
    Q&A 
  • 108
    Reviews
  • Articles
  • Shipping
  • Accessories

Grade
Style
Water Pressure
3100
PSI
Water Flow
2.7
GPM
Cleaning Speed
8370
Cleaning Units
Engine
Generac
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Powerful Generac 5.5 HP Horizontal Shaft OHV Engine
Easily handles most tasks around the house

High Performance AR Axial Cam Pump
Brass head is more durable than all-aluminum pumps
Easily accessible- no more kneeling to connect hoses

Handy, Manuverable Cart With Spray Gun Holster
Engine & pump are perfectly balanced & easy to move
Large Never-Flat wheels take on varied terrain

Ergonomic Generac Spray Gun With 20" Lance
Soft grip & easy-pull inverted fulcrum trigger reduces fatigue

5 Quick-Clickô Nozzle Tips & 30' M22 Hose
0°, 15°, 25°, 40°, and soap applicator

Two 3/4 Gallon On-Board Detergent Tanks
Keep 2 detergents handy- wash & wax, cleaner & grease cutter, etc

Stabilizing Foot Rest
Holds the unit steady for smoother pull-starting

2 Year Limited Warranty
Protects your investment

Not For Sale In California
Doesn't meet strict CARB emissions standards



Model
  Model Number:6598
 UPC:696471065985
 Manufacturer:Generac
Engine
 Engine Brand:Generac
 Starter:Recoil
 HP/CC5.5 HP/212 cc
 Fuel Tank Size3.2 quarts
Pump
 Pump Brand:AR
 Pump Type:Axial Cam
 Adjustable Pressure:No
 Chemical Injection:Dual Detergent Tank
 Detergent Tank Capacity:.75 gal x2
Housing
 Frame Type:2-Wheel Cart
 Wheels:NeverFlat
Hose
 Hose Storage:Hook
 Hose Length:30 ft
 Hose Material:PVC/Plastic
 Hose Diameter:1/4 Inch
 Hose Connections:M22
Spray Gun
 Spray Gun Connection:M22
 Spray Gun Grade:Residential gallons
 Spray Gun Wand:Single Wand
 Spray Tips:Quick Connect Tips (5)
 Turbo Nozzle:Sold Separately
Overview
 Weight:67.5 Lbs.
 Dimensions:23.3L x 16W x 40.3H
 Mfr Consumer Warranty:2 Years

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  9 Questions
Q: What is a flywheel brake and what is the purpose of it? does the generac have this brake and the Honda ? I had a Honda washer with a brake on it and I had a lot of different problems with it so im very cautions of buying another
by John T from Florida on September 13, 2014

A: No, this unit does not have a flywheel brake on it. The purpose of that is to control the engine speed. This unit is a great choice for homeowner use. I highly recommend this unit. The pump on the unit is made from AR, and is one of the best axial cam pumps in the industry today.
by Mike, Product Expert
Q: I have a 3100psi Generac model 60242 I purchased from PED. Works great. I have noticed lately that when I tilt the unit back in order to reposition it, it will suddenly quit. Is this the "Oil Alert System" sensing a drop in oil level and shutting down the engine? The unit restarts after a couple of pulls.
by Dave from North Carolina on June 05, 2014

A: It could be the Oil Alert sensor, or an adjustment needed in the carburetor... The good news is this unit comes with a 2 year Factory Warranty from the folks at Generac.

You can use their Service Center Locator to find your local Authorized Repair facilities, or give them a call at (888) 436-3722 x5381.

Please be sure to have the serial number of your pressure washer handy if you call Generac; they usually ask for it. You will need a copy of your invoice for any warranty work- just click on My Account in the upper right corner of our website and follow the prompts to print one out.

If there are several repair locations in your area you may want to call around to see which one has the shortest turn-around time so you get your pressure washer back as quickly as possible.
by Mike, Product Expert
Q: Hi...I see the site sells extended warranties. Who covers these, and what's covered. Also, is it worth it to go beyond the two year Generac offers.
by Brian Warehime from New York on May 29, 2014

A: The Extended warranty is covered by WarrenTech. They will start the day after the manufacture warranty and cover all non wearable items. Things that would not be covered would be items like the hose, gun, wand. They would have you take it to a local service center. I feel the Generac Warranty is great. However, if you would like extra time after that it is available for purchase.
by Mike, Product Expert
Q: I am looking for recommendation on accessories needed for the Generac 6598 to easily clean siding and gutters on a large 2 story house.
Thanks.

by Jared from Florida on May 08, 2014

A: I definitely recommend a telescoping wand and gutter cleaner attachment for your application. If you would like to spray detergent through the telescoping wand you will need to go with an aluminum one. I have included link to the telescoping wand, gutter cleaner, adapter needed to attach to your high pressure hose, and the detergent I recommend.

Telescoping Wand

Gutter Cleaner attachment

Adapter

Detergent
by Mike, Product Expert
Q: I'm buying a generac gas model# 6598 from you guys and am looking at MTM hydrojet turbonozzle to go with it.What size orifice should I get? We have a two story home (30' to gable ends) will MTM Hydro long-range detergent foamer work?
by Bruce E Lawrence from Maine on April 17, 2014

A: You should get a 3.0 Orifice Turbo Nozzle. Turbo Nozzles are meant to increase cleaning speed and efficiency, not for long distances. I have attached a link for you.

3.0 Orifice Turbo Nozzle

For your two story home and gables I would go with model 100145. This product allows you to reach up to 3 stories high. I have included a link to this as well.

Model 100145

Both of these product will quick connect on to the end of your lance where the colored spray tips usually go.
by Mike, Product Expert
Q: Will the Generac 6598 connect to a foam cannon like the MTM Hydro without needing any additional hardware?
by Doug from Rhode Island on April 15, 2014

A: Yes, you can purchase the MTM foamer model 14.0263. This has a fitting on it so that it quick connects into where your colored spray tips usually go, so no additional hardware is needed. I love this foamer!

MTM Foamer
by Mike, Product Expert
Q: What is the pump made out of?
by Zach from Minnesota on April 14, 2014

A: This unit has an AR axial cam pump with a brass head on it. It is a step above the rest in it's category. The brass head dissipates heat more effectively, therefore increasing the life of the pump.
by Mike, Product Expert
Q: Is there a telescoping spray wand available for the
Generac Model 6598?

by Carmen Fontana from Delaware on April 13, 2014

A: Yes, if you would like to be able to dispense detergent I recommend the 24' Aluminum Telescoping Wand. I have also included the adapter you will need to connect this product to your high pressure hose.


24' Aluminum Telescoping Wand

Adapter
by Mike, Product Expert
Q: If you go to Lowes, they still carry the model 6024. You show that model as being disconntinued. The 6598 seems to match up with the 6024, spec for spec. Is there any difference? Why wouldn't Lowes carry the 6598?
by Mark from Connecticut on March 19, 2014

A: The 6024 is the old model number. The new model number is the 6598. It has all the same components as the 6024, just different colors to make it more appealing.
by Mike, Product Expert
Generac 6598 Reviews & Ratings
Write Review
Overall Rating
Features
5/5
Quality
5/5
Performance
5/5
Value
5/5
Overall
4.7 out of 54.7 out of 54.7 out of 54.7 out of 54.7 out of 5
Pros
Easy To Use (44)
I'd Buy It Again (29)
Price (25)
Exceeded Expectations (18)
Easy To Store (17)
Cons
Low Quality (5)
Bad Instructions (4)
Difficult To Use (2)
Heavy (2)
Expensive (2)
94% of respondents would recommend this product to a friend
108 Reviews  Sort by 
 
Mike, the Pressure Washer Expert
Pressure Washer Expert

Product Expert
Total Reviews
120 Reviews
Total Helpful Votes
3301 Helpful Votes
Pressure Washers Direct Recommended

Given the oversized 212cc Generac brand engine and the durable AR brand axial cam pump, this model is great choice for any homeowner looking to purchase a very good quality pressure washer without putting a large hole in their wallet.

The frame on this unit, like all of the other Generac pressure washers, is a very well thought out design with the consumer in mind. It's balanced and easy to maneuver with 2 easily accessible detergent tanks at the bottom. This model has a vertical frame... more
Mike Recommends This Model
Was this review helpful?
32134
John C.
Morganton, NC
Purchased from Pressure Washers Direct
Purchased 4/4/15
REVIEWED
APR.
09
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Prior Reviews Predict Your Experience
Very fast shipping. My Generac 6598 came in 4 days. I ordered a Surface Cleaner the same day and I have no idea what the status is, but I am waiting on it. I ordered the ultimate quick connect today. I highly recommend getting these two accessories.

I used my pressure washer for the past two days and I will give you my experience so far.

Set up was easy but my gas cap, like other reviewers, came broken. Luckily, the gas cap has a metal cap that is molded into a plastic outer... more
Pros: Easy To Use, I'd Buy It Again, Price, Easy To Store
Cons: Packaging, Needs Protection On The Top Of The Box
John Recommends This Generac Product
Mike, the Pressure Washer Expert
Product Expert
John,
Thank you so much for sharing such a great review. This kind of feedback is extremely helpful to other shoppers, and we all really appreciate you taking the time to write it.

Best wishes, and have a great spring.
more
Manufacturer Response
Brand Rep
John,
Thank you for providing us with your highly-detailed review. Your input not only helps future shoppers, but also allows us to review our products and make adjustments and/or changes where we can. We appreciated your constructive feedback, and would like to encourage you to contact us directly at 888-GENERAC (436-3722) if there is something that we can help you with in the future.
more
Was this review helpful?
51
Michael K.
Berlin, CT
Purchased from Pressure Washers Direct
Purchased 3/28/15
REVIEWED
APR.
19
2015
4 out of 54 out of 54 out of 54 out of 54 out of 5
Needs Some Improvements
The unit was easy to assemble and started up on the first pull. Compact and easy to transport. Tube for solution vibrates so you need to keep pushing it in. If you run out of gas it is hard to restart.
Michael Recommends This Generac Product
Manufacturer Response
Brand Rep
Michael,
Thank you for providing us with your review of the 3100 PSI residential grade power washer. If you are having issues with the unit's siphoning tube, or to discuss any comments, questions, or concerns that you might have, please do not hesitate to contact us directly at 888-GENERAC (436-3722).
more
Was this review helpful?
10
Glenn H.
Sarona, WI
REVIEWED
APR.
15
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Form Antique To Modern
Had an old Generac that I could not longer get parts for. Decided on a 3100 and have used it two or three times-so far so good!

To the guy that didn't like the hose hook-up,try using a quick-tach. May solve your problem.
Pros: Easy To Use, Features, Fast
Glenn Recommends This Generac Product
Was this review helpful?
10
Raul E.
Round Rock, TX
Purchased from Pressure Washers Direct
Purchased 4/2/15
REVIEWED
APR.
24
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Great Buy!
I'm thrilled at this unit. It arrived promptly, was easy to assemble with easy to follow directions and it started right up. I washed the motors in my four vehicles with great results. It seems so powerful that I only used the medium spray tip and accomplished everything I wanted.

Unfortunately, the hose rubbed up against the front support edge while doing the fourth motor and the hose sprang a leak...my bad. I have ordered a replacement hose already, and am anxious to clean my driveway and... more
Raul Recommends This Generac Product
Manufacturer Response
Brand Rep
Raul,
Thank you for your detailed review of the 3100 PSI residential grade power washer. While we are sorry to learn of your mishap with the unit's hose, we are glad to know that you were able to contact an appropriate party for a replacement. If you ever have any comments, questions, or concerns about your product, please do not hesitate to contact us directly at 888-GENERAC (436-3722). Also, be sure to register your unit with Generac Nation by providing the information required here: http://www.generac.com/generac-nation-sign-up?cid=frm-105-aa.
more
Was this review helpful?
00
Cd B
Dallas, GA
Purchased from Pressure Washers Direct
Purchased 4/2/15
REVIEWED
APR.
23
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Gets The Job Done!!
Bought this for my husband because I got tired of listening to him say he wanted one. He LOVES it!! He's a pressure cleaning fool! He's pressure cleaned the house, the deck, the porch, the pollen off our vehicles and patio furniture, the driveway, and the wasp and hornet nests!!! I'm really curious to see if the pressure will wash away a few squirrels too!!

Hopefully soon, he'll pressure clean the gutters, since I purchased the telescoping wand and the gutter cleaner as well so he won't... more
Pros: Easy To Use, I'd Buy It Again, Exceeded Expectations, Powerful
Cd Recommends This Generac Product
Mike, the Pressure Washer Expert
Product Expert
Cd,
We're so happy to hear it's worked out this well for you. Thank you for the review, and best wishes for a great summer!
more
Manufacturer Response
Brand Rep
Cd,
We are pleased to learn that you are satisfied with our product! Thank you for providing us with your candid and detailed review. Also, don't forget to initiate the product's warranty by registering the unit with Generac Nation via the following link: http://www.generac.com/generac-nation-sign-up?cid=frm-105-aa. If you have any questions regarding the registration process, please do not hesitate to contact us directly at 888-GENERAC (436-3722).
more
Was this review helpful?
00
Donald S.
Inman, SC
Purchased from Pressure Washers Direct
Purchased 4/2/15
REVIEWED
APR.
23
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
New Pressure Washer
I recently purchased a Generac 3100 PSI pressure washer. I was able to put it to good use this past weekend. It worked admirably. I used it to wash my deck, siding and cement patio. It performed as described in the advertisement.
Donald Recommends This Generac Product
Was this review helpful?
00
Jimmy M.
Augusta, GA
Purchased from Pressure Washers Direct
Purchased 3/28/15
REVIEWED
APR.
19
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Does What
Bought it for cleaning house and driveway. Did everything I needed. Easy to start and operate. Shape takes up little room.
Jimmy Recommends This Generac Product
Was this review helpful?
00
Anthony B.
Mt Pleasant, SC
Purchased from Pressure Washers Direct
Purchased 3/23/15
REVIEWED
APR.
13
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Excellent Experience
I've had 3 pressure washers and I can safely say this is by far the best one. My order was delivered ahead of schedule. Assembly was incredibly easy and it started in two pulls.

Good spray tip selection and terrific overall design. The spray wand is comfortable and the pressure and cleaning power is outstanding. Can't say enough good things. Thanks!
Anthony Recommends This Generac Product
Manufacturer Response
Brand Rep
Anthony,
Thank you for providing us with your candid review of the 3100 PSI residential grade power washer! We are always happy to hear about positive experiences with our products. Donít forget to register your unit here: http://www.generac.com/generac-nation-sign-up?cid=frm-105-aa, to obtain warranty-related information and consumer alerts in the future.
more
Was this review helpful?
00
Bryan H.
Kent, WA
Purchased from Pressure Washers Direct
Purchased 2/17/15
REVIEWED
APR.
12
2015
2 out of 52 out of 52 out of 52 out of 52 out of 5
Don't Buy!
After the second use, I put it in my garage only to find a large puddle of gas under the pressure washer 30 minutes later. The gas tank is leaking, looks like the seams are bad, gas is dripping off the lower bolts and all around the lower part of the tank.

Now I'm looking at a 28 mile drive each way to drop this off for repair. Clearly Generac needs to review their quality control procedures. I am very aware this is not a top of the line product, but this is a complete waste of my time and I... more
Mike, the Pressure Washer Expert
Product Expert
Bryan,
I apologize for the issues you are having with the unit. In all honesty, it is very rare to see this issue on a Generac product. However, the manufacturer warranty is there for failures due to workmanship and quality.

I apologize there is not a service center closer to your home. If you feel comfortable replacing the gas tank, I can have Generac send a new part directly to you. This is the first time I am hearing about the issue you are having with the unit, and we are here to support and help if we can. Feel free to call me direct at 800-710-7499.

As for the sales, they are dictated by the manufacturer. Unfortunately your order was placed in February, and I am unable to match that price at this time. The sales are funded directly from Generac and not our promotions.
more
Manufacturer Response
Brand Rep
Bryan,
We would like to apologize for the issues that you have experienced with your residential grade power washer. Please note that we stand behind our products with the warranty coverage applied to each unit. This is where working with a local independent authorized service provider becomes important; these certified businesses are trained to not only diagnose your unit's issues, but they are also able to provide any applicable warranty coverage to your product when needed. Moreover, if any issues were caused during the shipment of your power washer, we would recommend contacting the assigned shipping company to have a freight claim filed for your product. If you have any questions about this process, or if you would like to speak with us regarding any other product or service-related comments, questions, or concerns that you might have, please do not hesitate to contact us directly at 888-GENERAC (436-3722).
more
Was this review helpful?
00
Pat
Purchased from Pressure Washers Direct
Purchased 5/22/14
Total Helpful Votes
37 Helpful Votes
Most Helpful Critical Review
REVIEWED
JUN.
03
2014
1 out of 51 out of 51 out of 51 out of 51 out of 5
Hard To Start & Running Rough
Fast delivery & easy set-up. The unit was hard to start and ran very rough. Can't be returned since it has had fuel in it. Authorized warranty repair shop should be able to get to it in a couple of weeks. And now the unit is on sale.
Cons: Low Quality
Mike, the Pressure Washer Expert
Product Expert
Pat,
I am sorry to hear your pressure washer isn't running well; I understand how disappointing that can be.

I see from your file that there are several Generac Authorized repair locations in your area- I hope you called around to find the one with the shortest turn-around time? During the summer months I realize they get busy.

It is Federal Law that prevents shipping an engine that has had gas in it, since it's a fire/explosion hazard. That's why we only sell products with national service networks.

For folks reading this review, there are a couple tips for new engines. First is to use fresh gas- the stuff you've had sitting around for the lawn mower may have lost a lot of its volatile compounds and won't burn well.

Second is to hook up the water to the unit, then pull the spray gun trigger and let the water run for a minute without starting the engine. This drives out all the air from the pump, preventing vapor lock. Since the pump and engine are connected directly, vapor lock can make it very difficult to get the engine to turn over.

We post the best prices we can every day. Occasionally manufacturers will run specials where they provide bonus items or a special price for sales that happen in a specific time period. Unfortunately they won't provide credits for sales that happen outside their time period. We appreciate your business, and apologize for any inconvenience.
more
Was this review helpful?
379
Michael S.
Purchased from Pressure Washers Direct
Purchased 5/19/14
Total Helpful Votes
21 Helpful Votes
Most Helpful Positive Review
REVIEWED
MAY.
21
2014
5 out of 55 out of 55 out of 55 out of 55 out of 5
Amazing Machine!
My wife and I have a small weekend home on a lake, but we have a huge amount of deck- probably nearly the square footage of the house. And since we also have a monster pine tree that covers a good deal of it, we have a constant problem with pollen and dirt.

For the past couple of years, I have relied on my 1700 psi electric power washer, and it's done a creditable job. But it also takes me the better part of two days to wash the deck. At most I can clean about a 1 1/2 inch swath, and I have... more
Pros: Easy To Use, I'd Buy It Again, Exceeded Expectations, Fast
Cons: Bad Instructions
Michael Recommends This Generac Product
Was this review helpful?
212
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